Computer Controlled Refrigeration Unit with Different Capillary Tubes

The Computer Controlled Refrigeration Unit with Different Capillary Tubes, is clearly arranged and represents a typical compression refrigeration system with compressor.

ATENG 12778 — Computer Controlled Refrigeration Unit with Different Capillary Tubes

(for main items)

• With this unit there are several options and possibilities:
• Main items: 1, 2, 3, 4, 5 and 6.
• Optional items: 7, 8, 9, 10 and 11.
• Let us describe first the main items (1 to 6):
• 1 ATENG 12778. Unit:
  Bench-top unit.
  Anodized aluminum frame and panels made of painted steel.
  Main metallic elements made of stainless steel.
  Diagram in the front panel with distribution of the
  elements similar to the real one.
• Hermetic compressor, power: 3/8 HP.
  Computer controlled condenser and evaporator with
• fan, air flow: 980 m³/h.
  Transparent tubes to observe the coolant change of
  state.
  Storage vessel to prevent a wrong operation of the
• compressor, capacity: 0.5 l.
  Additional storage tank for overfill and underfill study,
• Unit: ATENG 12778
• capacity: 0.5 l.
• Expansion devices:
  Thermostatic expansion valve.
• Three capillary tubes of different lengths: 1.5 m, 3 m, 6 m.
  Filter for the working fluid.
  Sight glass for the working fluid.
• High pressure switch, range: 8 – 32 bar.
• Low pressure switch, range: 0.7 – 4 bar.
• Liquid separator to prevent liquid from entering the compressor, capacity: 0.73 l.
• Refrigerant flow sensor, range: 5 – 60 l/h.
  Wattmeter to measure the compressor power.
  Four “J” type temperature sensors distributed at key points of the refrigeration cycle.
  Five manometers and three pressure sensors distributed along the circuit to view the pressures in key
  points.
  Enthalpy diagram of R-513a.
  This unit has been designed for the use with the refrigerant R-513a, CFC-free, environmental friendly.
• The complete unit includes as well:
  Advanced Real-Time SCADA.
  Open Control + Multicontrol + Real-Time Control.
  Specialized Control Software based on LabVIEW.
  National Instruments Data Acquisition board (250 KS/s, kilo samples per second).
  Calibration exercises, which are included, teach the user how to calibrate a sensor and the
  importance of checking the accuracy of the sensors before taking measurements.
  Projector and/or electronic whiteboard compatibility allows the unit to be explained and
  demonstrated to an entire class at one time.
  Capable of doing applied research, real industrial simulation, training courses, etc.
  Remote operation and control by the user and remote control for technical support,
  are always included.
  Totally safe, utilizing 4 safety systems (Mechanical, Electrical, Electronic & Software).
  Designed and manufactured under several quality standards.
  Optional ICAI software to create, edit and carry out practical exercises, tests, exams,
  calculations, etc. Apart from monitoring user's knowledge and progress reached.
  This unit has been designed for future expansion and integration. A common expansion is
  the Scada-Net (ESN) System which enables multiple students to simultaneously
  operate many units in a network.